No 3 (2017)

Articles
THE FORMING OF THE SURFACES ON THE CURVED COUNTER PLANES
Ivanov V.N.
Abstract

The article concerns the questions of the forming of the space thin walled structures on curvilinear planes. They may be used for constructions of the social buildings, exhibition, on sport structures. This method may be used for forming surfaces at 4, 3 and 2-angale plans with curvelinear supporting contour lines and on the planes of closed curves as circle or ellipse as well

Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):3-8
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ON THE INVESTIGATIONS OF RULED HELICAL SHELLS IN 2000-2017
Vladimir J.P.
Abstract

Currently, much attention is paid to development of infrastructure, which is associated with an increase in construction volumes and reducing the area of development, as well as introducing new architectural forms in the typical structures of socio economic purpose. The peak of publication on analytical methods of linear analysis of helicoidal shells was in the 1950s. In this work, detailed review of the literature on the topic of the geometry, the static analysis, and the use of ruled helicoidal shells in the 2000-2017 years is presented.

Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):9-11
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MOUNTING STRESS-STRAIN STATE OF JOINT-ROD COVERINGS OF DEPARTMENT OF BALLS AND REAGENTS
YUGOV А.М., BОNDAREV А.B.
Abstract

This article gives an overview of previously carried out work on the accuracy of the calculation, determine the mounting loads of metal structures. Given the results of the study of the mounting stress-strain state, which occurs in structures-span hinge-rod cover warehouse balls and reagents. Numerical study of the mounting stress-strain state is made by finite element method, which is implemented in the computing complex SCAD. Also, see impact assessment values installation effort on the carrying capacity of the individual rods coated. Presentation of the efforts made in the form of histograms. The values obtained efforts indicate that the development of measures necessary to reduce the value of the initial forces generated during assembly cover and respectively the geometrical deviations in the coating in its design

Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):12-22
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ON THE CHOICE OF THE LATTICE GIRDER
KIRSANOV M.N.
Abstract

The analytical solution to the problem of deflection of statically determinate flat truss with diagonal bars is obtained. The solution is compared with a similar of the truss with a triangular lattice. Solution is prepared in the system of computer mathematics Maple. The method of induction is used for generalization the solution to an arbitrary number of panels. The asymptotic properties of solutions are found. The formulas for forces in the most compression and tie rods are obtained.

Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):23-27
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ANALYTICAL SOLUTION FOR BEAM STRUCTURE WITH ELASTO-PLASTIC PROPERTIES OF MATERIAL
ELENITSKIY E.Y.
Abstract

The differential equations are received and the new exact solution of a problem for a rec- tangular cross section and flat statically determination beam structure at action of longitudinal and transvers loadings is constructed. Three characteristic areas of the beam, distinguished by schemes of position of elastic core section were considered. All the components of the stress- strain state, borders of elastic-plastic zones are determined. A numerical analysis of linear and nonlinear formulation was presented.

Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):27-34
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THEORETICAL APPROACH FOR THE GEOMETRICALLY NONLINEAR BUCKLING ANALYSIS OF SINUSOIDAL VELAROIDAL SHELLS
GIL-OULBE M., SHAMBINA S.L., DAU T.
Abstract
The main subjects of the article are theoretical strength and buckling analyses of a sinusoidal velaroidal shell subjected to its self-weight and uniformly distributed load in geometric nonlinearity. A short history of finite element applications to shell buckling is given. The finite element method is used in its matrix formulation. The elastic stiffness matrixes in the local coordinate system of the membrane element are defined in their general form. The out-of-plane geometric stiffness matrix for the plate along the same lines is derived
Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):35-40
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A MATHEMATICAL MODEL OF DISCRETIZATION OF ARTICULATED AXISYMMETRIC SHELLS WITH DIFFERENT VALUES OF PHYSICAL-MECHANICAL CHARACTERISTICS OF MATERIALS
KLOCHKOV Y.V., NIKOLAEV A.P., KISELEVA T.A., ANDREEV A.S.
Abstract

It is described an algorithm for calculating axisymmetric articulated shells with different physical and mechanical characteristics of materials based on the FEM using scalar and vector interpolations of displacement fields. As part of the sampling, a curved fragment of the merid- ian of the shell with nodes i and j is used. The analysis of VAT thin-walled structures made of heterogeneous materials in the form of a cylinder, articulated to the sphere and ellipsoid is fulfilled.

Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):41-50
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FEATURES OF THE USE OF FINITE ELEMENTS WITH POSSIBLE REFLECTION OF SURFACE GRAVITY WAVES IN THE PROCESS OF DYNAMIC CALCULATING COUPLED SYSTEMS «HYDRAULIC STRUCTURES-FLUID»
DMITRIEV D.S.
Abstract

The article described in detail and shown in the test case, some specific features fluid simulation by finite elements with the possibility of taking into account surface gravity waves in the calculation of related systems "hydraulic structure-fluid" in the software package ANSYS Mechanical. Formulate conclusions about the applicability of these elements to hydraulic problems class.

Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):50-58
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INHIBITION OF CURVILINEAR COHESIVE CRACK GROWTH IN A BENDING STRIP (BEAM) BY INDUCED HEAT STRESS FIELD
MUSTAFAYEV A.B.
Abstract

We consider a temperature changes near end of curvilinear crack with end zones of mate- rial cohesive forces in bending strip (beam). The aim of the local temperature changes is a delay or inhibition of crack growth. Boundary value problem for equilibrium of curvilinear crack under the action of external bending loads, induced thermoelastic stress field and trac- tions in bonds, preventing its disclosure, is reduced to a system of nonlinear singular integro- differential equations with the kernel of Cauchy type. Condition of crack limit equilibrium is formulated on the basis of a two-parameter fracture criterion.

Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):59-70
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ANALISIS OF THE “BOUNDARY LAYER“ STRESS-STRAIN STATE IN FRAMES OF THE NONCLASSICAL CYLINDRICAL SHELL THEORY
Firsanov V.V.
Abstract
Two variants of a refined theory of determining the stress-strain state in the boundary zone of a cylindrical shells are represented. As an example the calculations of a shell with rigidly restrained on two edges and under the influence of local distributed and concentrated loadings is considered. The Comparison of calculation results of the stress-strain state shell obtained in this work and by the classical theory is given
Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):71-76
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EFFECT OF THE FORM OF BLANK ON QUALITY OF INDICATOR PRESSWORK
Morozov Y.А., Frolov E.Y., Krutina E.V.
Abstract

The possibility of obtaining forged products from billets of rectangular shape with cut and uncut edges. Experimental measurements of elastic distortion of the side walls from the ideal contour details. Recommendations for the design of die tooling and improve the quality of extractable product box shapes

Structural Mechanics of Engineering Constructions and Buildings. 2017;(3):76-80
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